Hiroshima Station has two main entrances: the north — or Shinkansen — entrance, and the south entrance. Until the 1975 opening of the Shinkansen service, the Shinkansen entrance was called the "north entrance", and many local residents, newspapers, and real estate advertisements continue to refer to it as the "north entrance".

A pedestrian tunnel connects the area in front of the Shinkansen entrance to an underground plaza underneath the south entrance to Hiroshima Station. The tunnel includes many gift shops and restaurants, as well as two exits to Fukuya, one to the Hiroshima Station Tram Stop, one in front of the Hiroshima Higashi Post Office, and one directly in front of the south entrance to Hiroshima Station.

Elevator and escalator access is available for several of the entrances. Events are sometimes held in the large area of the underground plaza in front of the entrance to Fukuya.